American liquid 0.946 liter 1/4 gallon or 32 ounces dry 1.101 liters 2 pints British either 1.136 liters teaspoon t., tsp., tsp either about 5 milliliters 1/3 tablespoon tablespoon T., tbs., tbsp. either about 15 milliliters 3 teaspoons or 1/2 ounce Try the Conversion Calculator.
The old record for the largest hailstone had a diameter of 5.7 (14.5 centimeters) inches, a circumference of 17.5 inches (44.5 centimeters), and was found in Coffeyville, Kansas, on September 3, 1970. The previous longstanding record was believed to be a hailstone which fell at Potter, Nebraska on July 6, 1928.
UPDATE 8/12: Here is the official story from NOAA-calling it volleyball-sized hail.. The stone won for diameter and weight, but not circumference. And it had melted some. UPDATE 1 PM 7/28: A trusted inside source who was on the call with the National Climate Extremes Committee today says that they will issue a statement that the 7/23 hail stone sets a new national record for both weight and diameter.